Heavy Rainfall Threat The Next Few Days Across The Eastern U.S.

A strong cold front will gradually push through the Eastern U.S. over the next few days and will likely produce heavy rain and severe weather. The rainfall may become excessive and result in flash flooding. Flash flood watches are currently in effect from the coastal Carolinas to the Great Lakes.
Read More...

For More Weather Information:

Key West, FL Local Forecast Office

3NM SSW Alligator Reef Light FL

Marine Point Forecast

[NOTICE]
  • Tonight

    Scattered Showers

    NE 10kt
    2ft

    Low: 82 °F

  • Wednesday

    Scattered Showers

    Light Wind
    1ft

    High: 85 °F

  • Wednesday
    Night

    Scattered Showers

    Light Wind
    1ft

    Low: 80 °F

  • Thursday

    Scattered Showers

    Light Wind
    1ft

    High: 85 °F

  • Thursday
    Night

    Scattered Showers

    Light Wind
    1ft

    Low: 80 °F

  • Friday

    Scattered Showers

    Light Wind
    1ft

    High: 85 °F

  • Friday
    Night

    Scattered Showers

    Light Wind
    1ft

    Low: 80 °F

  • Saturday

    Scattered Showers

    Light Wind
    1ft

    High: 85 °F

  • Saturday
    Night

    Scattered Showers

    Light Wind
    1ft

    Low: 80 °F


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 5:15 pm CDT Sep 21, 2021
Forecast Valid: 7pm CDT Sep 21, 2021-6pm CDT Sep 28, 2021

View Nearby Observations

Detailed Forecast


Synopsis: High pressure will weaken over the southeastern Gulf of Mexico late tonight and tomorrow, as a mid-latitude trough pushes in over the east before stalling over north-central Florida. A weak pressure pattern will become established across the Florida Keys coastal waters Wednesday night through much of the weekend. Gentle easterly breezes tonight through Wednesday morning will become light and variable across the marine zones by Wednesday evening. Rain and thunder chances will remain elevated through the end of the work week, with slow reductions in rain chances over the weekend and into early next week.

The Approximate Shoreward Edge of the Gulf Stream as of September 21, 2021...

49 NM South of Dry Tortugas Light...on Loggerhead Key. 19 NM South of Cosgrove Shoal Light...off the Marquesas Keys. 22 NM South of Sand Key Light...off Key West. 24 NM South of Looe Key...off Big Pine Key. 21 NM South of Sombrero Key Light...off Marathon. 14 NM Southeast of Alligator Reef Light...off Islamorada. 11 NM Southeast of Molasses Reef Light...off Key Largo. 6 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

Tonight
NE wind around 10 kt. Scattered showers and thunderstorms. Seas around 2 ft.
Wednesday
Variable winds 5 kt or less. Scattered showers and thunderstorms. Seas around 1 ft.
Wednesday Night
Variable winds 5 kt or less. Scattered showers and thunderstorms. Seas around 1 ft.
Thursday
Variable winds 5 kt or less. Scattered showers and thunderstorms. Seas around 1 ft.
Thursday Night
Variable winds 5 kt or less. Scattered showers and thunderstorms. Seas around 1 ft.
Friday
Variable winds 5 kt or less. Scattered showers and thunderstorms. Seas around 1 ft.
Friday Night
Variable winds 5 kt or less. Scattered showers and thunderstorms. Seas around 1 ft.
Saturday
Variable winds 5 kt or less. Scattered showers and thunderstorms. Seas around 1 ft.
Saturday Night
Variable winds 5 kt or less. Scattered showers and thunderstorms. Seas around 1 ft.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
  Select Another Point

ABOUT THIS FORECAST

Point Forecast: 24.79°N 80.66°W
Last Update: 5:15 pm CDT Sep 21, 2021
Forecast Valid: 7pm CDT Sep 21, 2021-6pm CDT Sep 28, 2021
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

Link to Local Radar Data Link to Satellite Data